Is my ignition coil bad?
#1
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Join Date: Oct 2004
Location: Tulsa, OK
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Is my ignition coil bad?
I have a 1985 porsche 944 that i bought two weeks ago. I have had no problems with the car until yesterday. Driving to work, it was running perfect. After work, when i went to start it, it would turn over but not start. Upon getting it home, I checked for fuel and spark and had no spark. With a voltometer, I checked the positive side of the coil to the negative side of the battery and had 12 volts. I then checked the negative side of the coil and the positive side of the battery and had nothing. I assumed the coil was bad so I removed it. Between the two sides of the coil I had 1.0 volts resistance. On the high side I had 5.8 volts resistance. Out of curiousity, I checked the two coil wires while they were disconnected from the coil and had 12 volts between them.
Long story short...when the negative side touched the terminal of the coil, I lose my voltage on the voltometer. When it's not touching it, I have 12 volts...???
Does this mean a bad coil?
Thanks,
Michael
Long story short...when the negative side touched the terminal of the coil, I lose my voltage on the voltometer. When it's not touching it, I have 12 volts...???
Does this mean a bad coil?
Thanks,
Michael
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Join Date: Mar 2008
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I have no idea on the answer to that, but I am too wondering how to tell if the ignition coil is bad. Iv had my turbo for over 3 years, and far as I know its never been touched. I am in the process of putting in new wires, cap, rotor, (spark plugs are new already) and I too have hard starts. It turns over but NO start. Like it keeps trying and trying. Im hoping its the ignition coil in my case thats causing that.
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Burning Brakes
tach bounce when cranking?